<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8" />
    <title>列表过滤</title>
    <script type="text/javascript" src="./../vue.js/vue.js"></script>
  </head>

  <body>
    <div id="root">
      <h2>人员列表</h2>
      <input type="text" placeholder="请输入名字" v-model="keyWord" />
      <ul>
        <li v-for="(p,index) of fillPerson" :key="index">
          {{p.name}}-{{p.age}}-{{p.sex}}
        </li>
      </ul>
    </div>

    <script type="text/javascript">
      Vue.config.productionTip = false;

      //用watch实现
      // #region
      // new Vue({
      // 	el:'#root',
      // 	data:{
      // 		keyWord:'',
      // 		persons: [
      // 			{id:'001',name:'马冬梅',age:19,sex:'女'},
      // 			{id:'002',name:'周冬雨',age:20,sex:'女'},
      // 			{id:'003',name:'周杰伦',age:21,sex:'男'},
      // 			{id:'004',name:'温兆伦',age:22,sex:'男'}
      // 		],
      // 		fillPerson: []
      // 	},
      // 	watch: {
      // 		keyWord: {
      // 			immediate: true,
      // 			handler(val) {
      // 				this.fillPerson = this.persons.filter( item => item.name.indexOf(val) !== -1 )
      // 			}
      // 		}
      // 	}
      // })
      // #endregion

      // 用computed实现
      new Vue({
        el: "#root",
        data: {
          keyWord: "",
          persons: [
            { id: "001", name: "马冬梅", age: 19, sex: "女" },
            { id: "002", name: "周冬雨", age: 20, sex: "女" },
            { id: "003", name: "周杰伦", age: 21, sex: "男" },
            { id: "004", name: "温兆伦", age: 22, sex: "男" },
          ], 
        },
        computed: {
          fillPerson() {
            return this.persons.filter(
              (item) => item.name.indexOf(this.keyWord) !== -1
            );
          },
        },
      });
    </script>
  </body>
</html>
